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Chapter 5, Problem 56EAP

If a car stops suddenly, you feel “thrown forward.” We’d like to understand what happens to the passengers as a car stops.

Imagine yourself sitting on a very slippery bench inside a car. This bench has no fiction, no seat back, and there’s nothing for you to hold onto.

  1. Draw a picture and identify all of the force acting on you as the car travels at a perfectly steady speed on level ground.

  • Draw your free-body diagram. Is there a net force on you? If so, in which direction?
  • Repeat parts a and b with the car slowing down.
  • Describe what happens to you as the car slows down
  • Use Newton’s laws to explain why you seem to be “thrown forward” as the car stops. Is there really a force pushing you forward?
  • Suppose now that the bench is not slippery. As the car slows down. You stay on the bench and don’t slide off. What force is responsible for your deceleration? In which direction does this force point? Include a free-body diagram as part of your answer.
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    Students have asked these similar questions
    Suppose that a 1000 kg car is traveling at 25 m/s (55 mph). It brakes and slides across the road with a force of friction of 5000 N acting on it.  What is the minimum distance required for the car to stop? Make a quantitative force diagram. Write a force (N2L) equation for the axis along which forces are not balanced.
    Activity 2.4. B. HOW MUCH DO I WEIGH? A. You stand on a bathroom scale that rests on the floor inside the elevator. Standing on the scale compresses the internal springs and activates a dial that indicates your weight in newtons. When the elevator is at rest, the scales reading is 550 N. The the elevator begins to move upward with a constant acceleration of 2.5m/s?. 4. Draw the free-body diagrams for this problem.
    Please answer A and B. If possible, Question F too. Thanks!

    Chapter 5 Solutions

    Physics for Scientists and Engineers: A Strategic Approach with Modern Physics, Books a la Carte Edition; Student Workbook for Physics for Scientists ... eText -- ValuePack Access Card (4th Edition)

    Ch. 5 - Is the statement “An object always moves in the...Ch. 5 - Prob. 12CQCh. 5 - 13. Is it possible for the friction force on an...Ch. 5 - 14. Suppose you press your physics book against...Ch. 5 - FIGURE Q5.15 shows a hollow tube forming...Ch. 5 - Prob. 16CQCh. 5 - Which of the following are inertial reference...Ch. 5 - Prob. 1EAPCh. 5 - Prob. 2EAPCh. 5 - A baseball player is sliding into second base....Ch. 5 - Prob. 4EAPCh. 5 - 5. An arrow has just been shot from a bow and is...Ch. 5 - Two rubber bands cause an object to accelerate...Ch. 5 - Two rubber bands pulling on an object cause it to...Ch. 5 - FIGURE EX5.8 shows acceleration-versus-force graph...Ch. 5 - Prob. 9EAPCh. 5 - Prob. 10EAPCh. 5 - Prob. 11EAPCh. 5 - FIGURE EX5.12 shows an acceleration-versus-force...Ch. 5 - Prob. 13EAPCh. 5 - 14. FIGURE EX5.14 shows the acceleration of...Ch. 5 - Prob. 15EAPCh. 5 - Prob. 16EAPCh. 5 - Prob. 17EAPCh. 5 - Exercise 17 trough 19 show two of the three forces...Ch. 5 - Exercise 17 trough 19 show two of the three forces...Ch. 5 - Prob. 20EAPCh. 5 - Prob. 21EAPCh. 5 - Prob. 22EAPCh. 5 - Exercise 23 through 27 describe a situation. For...Ch. 5 - Exercise 23 through 27 describe a situation. For...Ch. 5 - Exercise 23 through 27 describe a situation. For...Ch. 5 - Exercise 23 through 27 describe a situation. For...Ch. 5 - Exercise 23 through 27 describe a situation. For...Ch. 5 - Prob. 28EAPCh. 5 - Prob. 29EAPCh. 5 - Prob. 30EAPCh. 5 - Prob. 31EAPCh. 5 - A single force with x-component Fxacts on a 500 g...Ch. 5 - A constant force is applied to an object, causing...Ch. 5 - A constant force is applied to an object, causing...Ch. 5 - Problem 35 through 40 show a free-body diagram....Ch. 5 - through 40 show a free-body diagram. For each:...Ch. 5 - Prob. 37EAPCh. 5 - Prob. 38EAPCh. 5 - Problem 35 through 40 show a free-body diagram....Ch. 5 - Problem 35 through 40 show a free-body diagram....Ch. 5 - In lab, you propel a cart with four known forces...Ch. 5 - Problems 42 through 52 describe a situation. For...Ch. 5 - Problems 42 through 52 describe a situation. For...Ch. 5 - Problems 42 through 52 describe a situation. For...Ch. 5 - Problems 42 through 52 describe a situation. For...Ch. 5 - Problems 42 through 52 describe a situation. For...Ch. 5 - Problems 42 through 52 describe a situation. For...Ch. 5 - Problems 42 through 52 describe a situation. For...Ch. 5 - Problems 42 through 52 describe a situation. For...Ch. 5 - Problems 42 through 52 describe a situation. For...Ch. 5 - Problems 42 through 52 describe a situation. For...Ch. 5 - Problems 42 through 52 describe a situation. For...Ch. 5 - The leaf hopper, champion jumper of the insect...Ch. 5 - Prob. 54EAPCh. 5 - 55. A heavy boxy is in the back of a truck. The...Ch. 5 - If a car stops suddenly, you feel “thrown...Ch. 5 - Prob. 57EAP
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    Drawing Free-Body Diagrams With Examples; Author: The Physics Classroom;https://www.youtube.com/watch?v=3rZR7FSSidc;License: Standard Youtube License